const SYSTEM_INFO = uni.getSystemInfoSync();
export const statusBarHeight = () => SYSTEM_INFO.statusBarHeight || 20;
export const getTitleBarHeight =() =>{
	if (uni.getMenuButtonBoundingClientRect){
		let {top,height} = uni.getMenuButtonBoundingClientRect(); 
		return height + (top - statusBarHeight())*2
	}
	else{
		return 40;
	}
}

export const getNavBarHeight =()=>statusBarHeight()+getTitleBarHeight();